A body-scan image of a gun tucked into someone’s pants, similar to the image a TSA officer would see in an airport scanner. (The Washington Post/Getty Images)

Despite enhanced security at the nation’s airports, more people are trying to bring guns on board, usually because they “forgot” they were armed, says the Transport Security Administration (TSA), according to USA Today.

The weapons are usually found at the security checkpoint, inside carry-on bags.

Last year the TSA reported finding 1,238 firearms at airport checkpoints, which works out to an average of almost four guns per day.

“More than 10 years after the Sept. 11, 2001 attacks, people are still trying to bring deadly weapons into the cabin of the airplane,” said TSA administrator John Pistole when he addressed Congress in November.